false - Weathering changes the surface of the earth quickly., flooding - Changes the surface of the earth quickly., clay - The smallest earth material we have studied this year., decay - When dead plants or animals break down into small pieces., properties - Bumpy, rough, smooth, and round are all examples of different..., ice - Water in its solid state., soil - A mixture of humus, silt, clay, sand, gravel and small pebbles, river - An example of water in its liquid state., weathering - The process of rocks rubbing together., gravel - Bigger than sand, but smaller than pebbles., pottery - A useful item made from clay., sand - When you rub two rocks together you get..., erosion - The carrying away of earth materials by wind, water, or ice., minerals - Rocks are made of these., scoria - The reddish lava rock that we studied., water vapor - Water as a gas., rocks - A geologist is a scientist who studies these.,

Pebbles, Sand, and Silt Review

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